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A manufacturer needs to know its machines are building circular gears with a diameter of 34 cm. The quality control engineer conducts a random sample of 10 of the machines and achieves a mean diameter of 33.9 cm with a standard deviation of .1 cm. Assuming the distribution is normally distributed, conduct a hypothesis test with a 1% level of significance to determine if the machines are producing gears with a diameter of 34 cm or not. T T 1 1 Arial

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